2605730815 has 16 divisors (see below), whose sum is σ = 3160735200. Its totient is φ = 2062051200.

The previous prime is 2605730791. The next prime is 2605730819. The reversal of 2605730815 is 5180375062.

It is not a de Polignac number, because 2605730815 - 2¹¹ = 2605728767 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2605730819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 856477 + ... + 859513.

It is an arithmetic number, because the mean of its divisors is an integer number (197545950).

Almost surely, 2^2605730815 is an apocalyptic number.

2605730815 is a deficient number, since it is larger than the sum of its proper divisors (555004385).

2605730815 is a wasteful number, since it uses less digits than its factorization.

2605730815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4842.

The product of its (nonzero) digits is 50400, while the sum is 37.

The square root of 2605730815 is about 51046.3594686242. The cubic root of 2605730815 is about 1376.0784161230.

The spelling of 2605730815 in words is "two billion, six hundred five million, seven hundred thirty thousand, eight hundred fifteen".